Annual report pursuant to Section 13 and 15(d)

8. STOCK OPTIONS AND WARRANTS (Details Narrative)

8. STOCK OPTIONS AND WARRANTS (Details Narrative) - USD ($)	12 Months Ended
	Apr. 30, 2017	Apr. 30, 2016
Stock based compensation - options	$ 597,400	$ 788,770
Stock based compensation - warrants	0	$ 905,340
Stock and Warrant Purchase Agreement [Member]
Warrants issued, shares		17,000,000
Stock issued new, shares		17,000,000
Proceeds from sale of common stock		$ 1,020,000
Fair value of warrants issued		$ 967,000
Warrants [Member]
Aggregate fair value of warrants issued	$ 40,000
Warrants issued, shares	1,638,796	17,000,000
Warrants expired, shares	(18,755,200)
Class A Warrants [Member]
Warrants converted, shares	18,755,200
Proceeds from warrant conversion	$ 1,380,720
Debt converted	$ 25,920
Class B Warrants [Member]
Warrants converted, shares	2,318,000
Proceeds from warrant conversion	$ 278,160
Class D Warrants [Member]
Warrants issued, shares	18,755,200
Warrants expired, shares	18,755,200
Options [Member]
Options granted in period	23,550,000	15,600,000
Aggregate intrinsic value	$ 238,000
Aggregate intrinsic value per share	$ 0.078
Unvested Stock Options [Member]
Options granted in period	23,550,000	15,600,000
Unrecognized compensation expense weighted-average period	8 months
Warrants [Member] \| March 23, 2015 [Member]
Stock based compensation - warrants	$ 791,506	$ 791,506
Warrant expiration date	Mar. 23, 2020	Mar. 23, 2020
Warrants [Member] \| March 23, 2015 [Member]
Stock based compensation - warrants	$ 113,834	$ 113,834
Warrant expiration date	Dec. 31, 2015	Dec. 31, 2015
Employee Options [Member]
Options granted in period	9,250,000	15,600,000
Stock based compensation - options	$ 557,322	$ 789,000
Unrecognized compensation expense	$ 515,022
Non-Employee Options [Member]
Options granted in period	14,300,000	0
Stock based compensation - options	$ 40,078	$ 0
Non-Employee Options [Member] \| Exchange for Services [Member]
Stock based compensation - options	$ 40,078	$ 0
Non-Employee Options [Member] \| Options [Member] \| Guaranteed Options [Member]
Options granted in period	600,000
Non-Employee Options [Member] \| Options [Member] \| Non-Guaranteed Options [Member]
Options granted in period	12,500,000
Placement Agent [Member] \| Common Stock Purchase Warrant [Member] \| December 15, 2016 [Member]
Warrants issued, shares	769,231
Placement Agent [Member] \| Common Stock Purchase Warrant [Member] \| March 21, 2017 [Member]
Warrants issued, shares	869,565